An American football field, including end zones, is 360 feet long and 160 feet wide. If you needed to describe it for someone in Europe using the metric system,
which one of the following quantities would be closest to its area in square meters? (2.54 cm = 1.00 in.)
A) 4,920 m2
B) 5,350 m2
C) 88.0 m2
D) 12,100 m2
E) 13,200 m2
B
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A ball is thrown vertically into the air. Because of air resistance, its time coming down compared with its time going up is
A) less. B) the same. C) more.
Earth's inner core is
a. liquid. b. part solid and part liquid. c. solid. d. molten.
Suppose you electrically charge a comb by running it through your hair. If you then shake this comb back and forth one time every second, you will create
A) an electromagnetic wave having a frequency of 1 Hz and a speed of 300,000 km/s. B) a sound wave having a frequency of 1 Hz and a speed of 300,000 km/s. C) an electromagnetic field that vibrates at a frequency of 1 Hz, but no electromagnetic wave is created. D) the tooth fairy. E) a sound wave having a wavelength of 300,000 km and a speed of 300,000 km/s.
If 100 people are exposed to a total (collective) dose of 1 sievert, there will probably be 4 cancers experienced among the people in this group, not four as is asserted
What will be an ideal response?